Can't figure out this shape
I would start with a plane and then extrude the edge to create the basic shape:



Then add edge loops to get a decent quad mesh



Note that the loops going around are close to the edge.

Make sure the pivot point is at the top centre and the two verts are scaled to zero to make sure they are in line.



add a mirror modifier and apply it. Then add a couple of sharpening cuts on either side of the centre line.



Select all faces and extrude x 3 with the start and end extrude being close to the edge.



Add a subsurface x 2



I did this very quickly but you can adjust the initial block out verts to shape it with the image. The image is not great quality but I am sure you will do it better with more time.